Crobat @ Psychium Z  
Ability: Infiltrator  
EVs: 252 Atk / 4 SpD / 252 Spe  
Jolly Nature  
- Brave Bird  
- Super Fang  
- Taunt  
- Zen Headbutt  

Nidoqueen (F) @ Shuca Berry  
Ability: Sheer Force  
EVs: 252 HP / 252 SpA / 4 Spe  
Modest Nature  
IVs: 0 Atk  
- Counter  
- Earth Power  
- Flamethrower  
- Blizzard

Nidoking @ Choice Scarf  
Ability: Sheer Force  
EVs: 252 SpA / 4 SpD / 252 Spe  
Modest Nature  
IVs: 0 Atk  
- Earth Power  
- Sludge Wave  
- Surf  
- Blizzard  

crobat beats basically everything except rock z scoli and drapion
nidoqueen beats crobat w/ counter, scolipede with fireblast, most physical eqers, and venusaur
nidoking beats crobat with blizzard and beats non scarf non airballoon drapion, nihilego, and others